<template>
  <div class="login_container">
    <div class="login_box">
      <!--头像区域-->
        <div class="avatar_box">
          <img src="../assets/timg.jpg" alt="">
        </div>
      <!--登录表单区域-->
      <el-form
        :model="loginForm"
        label-width="0px"
        :rules="loginRules"
        ref="loginFormRef"
        class="login_form">
        <!--用户名-->
        <el-form-item prop="username">
          <el-input
            placeholder="admin"
            prefix-icon="iconfont icon-user"
            v-model="loginForm.username"
          ></el-input>
        </el-form-item>
        <!--密码-->
        <el-form-item  prop="password">
          <el-input
            placeholder="password"
            prefix-icon="iconfont icon-3702mima"
            type="password"
            v-model="loginForm.password"
          ></el-input>
        </el-form-item>
        <!--按钮区域-->
        <el-form-item class="btns">
          <el-button type="primary" @click="login">登录</el-button>
          <el-button type="info" @click="resetLoginForm">重置</el-button>
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>

<script>
export default {
  name: 'Login',
  data () {
    return {
      loginForm: {
        username: '',
        password: ''
      },
      loginRules: {
        username: [
          { required: true, message: '请输入登录名', trigger: 'blur' },
          { min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger: 'blur' }
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' }
        ]
      }
    }
  },
  methods: {
    resetLoginForm () {
      this.$refs.loginFormRef.resetFields()
    },
    login () {
      this.$refs.loginFormRef.validate(async valid => {
        if (valid) {
          const { data: res } = await this.$http.post('login', this.loginForm)
          if (res.meta.status !== 200) return this.$message.error('登录失败')
          this.$message.success('登录成功')
          //  将登录成功的token保存到客户端sessionStorage
          window.sessionStorage.setItem('token', res.data.token)
          this.$router.push('/home')
        }
      })
    }
  }
}
</script>

<style lang="less" scoped>
  .login_container {
    background-color: #2b4b6b;
    height: 100%;
  }
  .login_box{
    width: 450px;
    height: 300px;
    background-color: #fff;
    border-radius: 3px;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%,-50%);
  }
    .avatar_box {
      height: 130px;
      width: 130px;
      border:1px solid #eee;
      border-radius: 50%;
      padding: 10px;
      box-shadow: 0 0 10px #ddd;
      position: absolute;
      left: 50%;
      background-color: #fff;
      transform: translate(-50%,-50%);
      img{
        width: 100%;
        height: 100%;
        border-radius: 50%;
        background-color:#eee ;
      }
    }
  .btns{
    display: flex;
    justify-content: flex-end;
  }
  .login_form{
    position: absolute;
    bottom: 0;
    width: 100%;
    padding: 0 20px;
    box-sizing: border-box;
  }
</style>
